Canker sores are not contagious and are not related to the herpes simplex virus, also known as cold sores. Canker sores are thought to be caused by: Injuries to the mouth, as seen frequently by contact sports players. Accidentally biting the inside of the cheek or lip may also result in a canker sore.
Mexico has a population of 112,468,855 (July 2010 estimate) and its capital and largest city is Mexico City. Mexico is divided into 32 federal entities, of which 31 are states and one is a federal district. The following is a list of Mexico's 31 states and one federal district arranged by area. The population (as of 2009) and capital of each have also been included for reference.
Located in northern Mexico, Chihuahua is the countryâs largest state. It covers an area of 94,571 square miles (244,938 square kilometers). Chihuahua shares borders with four other Mexican states: Coahuila to the east, Durango to the south, and Sinaloa and Sonora to the west.